Twister stop-motion.



A. E. RHOADES. TWISTER STOP MOTION.

APPLICATION FILED JUNE 21, 1909.

941,463. Patented Nov'. 30, 1909.

'To all whom it may concern:

Be it known that I, ALoNzo E. RHOADES,

UNITED STATES PATENT OFFIC ALONZO E. RHOADES, 0F HOPEDALE, MASSACHUSETTS, ASSIGNOR T0 DEB COM PANY, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

TWISTED, STOP-MQTION.

Specification of Letters Patent.

Patented Nov. 36b, 19%.

Application fl led June 21, 1909. Serial No. 503,264.

a citizen of the United States, and resident of Hopedale, county of Worcester, State of' Massachusetts, have invented an Improvement in Twister Stop-Motions, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention has for its object the production of means-for stopping automatically the feed of a plurality of threads or ends paming through the top. and bottom rolls of a twisting machine upon breakage of one ofuthe threads before or after leaving the ro s. a

My invention is particularly adapted for use in twisters wherein two threads pass together' to the rolls to be twisted together, and I have provided automatically acting means to move laterally and off the end of thetop roll the plurality of threads passing thereto when one of the threads breaks after leaving the rolls, where breakage usually occurs, or before reaching the top roll. l

The various novel features of my invention will be full described in the subjoined specification an particularly pointed out in the following claims.

Figure 1 is a transverse section of a sulfi- -cient portion of a twister to be understood,

taken on the line 1-1, Fig. 2, with one embodiment of my invention applied thereto; Fig. 2 is a top plan viewof a portion of the mechanism shown in Fig. 1, with the stopmotion for one set of threads operative and for another set in normal, inoperative position; Fig. 3 is a detail in front elevation-of one of the deflectors.

The bottom roll a, Fig. 1, the top rolls 6 resting upon and driven by the bottom roll and having their journals b loosely held in guides c; the traverse-bar d having guides d for the set of threads or ends passing to each top roll I), and the pig-tells d Fig-1,

through which the sets of threads pass afterprovided with rearwardly extended ears 3, and between each pair of cars is pivoted at 4 the hub of an arm 5 upturned at its front end and laterally widened to form a deflector 6 having a cam edge 7, best shownin Fig. 3.

The rear end of arm 5 has an attached leg 8 inclined downward and frontward below the bar 1, and terminating in a guide-eye 9, Fig. 1, through which the threads of a set pass as they travel from the rolls to a pigtail 0?.

The combined strength of the twisted threads passing from the rolls is sufiicient, in connection with the long leverage auorded by the leg 8, to normally maintain the arm 5' and deflector 6 in elevated, full line position, Fig. 1, and as shown at the right, Fig. 2, so that the set of threads passing to the topv roll travel below and out of contact with the cam edge 7 of the deflector.

When a thread or end of a set breaks, however, and such breakage usually occurs below the rolls, the tension on the leg 8 is insufficient to maintain it in full line position, the weight of the arm 5 and the deflector then acting to move the deflector, arm and leg into dotted line position, Fig. 1, and as shown at the left Fig. 2. This movement of the deflector causes its cam edge7 to engage the threads passing to the top roll b, the convex shape of the cam edge acting to push the threads laterally toward the end of and ofi the top roll, thereby stopping the feed of that set of threads.

A slight projection-l0 on the underside of the arm 5 drops onto the top of the stand 2 and limits the downward movement of the deflector.

Should a thread of a set break before reaching the rolls the operation just described will be efiected, for the diminished strength of the thread passing through the.

guide-eye 9 will beinsufiicient to maintain Having fully described my invention,

what I claim as new and desire to secure by Letters Patent is 1. In a twister stop-motion, top and bottom rolls, a guide for a plurality of threads passing thereto, a deflector between sald guide and the rolls and movable in parallelism with the normal thread path, and a connected leg provided with a ide-eye through which the threads. pass a ter leaving the rolls, intact threads acting through the leg to maintain the deflector inoperative, release of the leg by breakage of a thread permitting movement of the deflector in the direction of travel of and to engage the threads passing to the top roll and move them axially thereof and off of said roll.

2. In a twister stop-motion, top and bottom rolls, a guide for a plurality of threads passing thereto, a swinging deflector having a cam edge, a connected leg engaged by the threads as they ass from the rolls and maintaining the eflector inoperative, and a fulcrum for said deflector, parallel to the axes of the rolls, breakage of a thread acting through the leg to permit descent of the deflector, the cam edge thereof engaging the threads passing to the top roll and moving them laterally ofl the end thereof to stop the feed.

3. In a twister stop-motion, top and bot tom rolls, a guide for a plurality of threads passing thereto, a deflector pivoted behind the rolls to swing parallel to the normal thread path and having a cam edgefand means acted upon by intact threads as they tom rolls, a deflector having a convex side edge andpivotally mounted back of the rolls, and a leg connected with a deflector and engaged by the thread after leavin the rolls, to maintain the convex edge 0 the deflector normally above the path of the thread passing to the top roll, retease of the leg by breakage of a thread permitting the deflector to movc its convex edge into and across the path of the thread passin to the top roll, to thereby move such threa laterally off the roll to stop the feed.

5. In a twister stop-motion, top and bot tom rolls, a gravity actuated deflector movable in parallelism with the normal path of the thread and adapted to engage and move laterally ofl the end of the top roll a thread passing thereto, and means acted upon by the thread when intact after leaving the rolls to maintain the deflector normally out of engagement with the thread passing to the top roll.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

ALONZO E. RHOADES.

Witnesses:

ROBERT *JAMmsoN, E. D. Oscoon. 

